Flow-Induced Vibration of Solitary Wire-Wrapped Cylinders in Axial Flow

Vibration of nuclear power plant components can cause fretting wear and fatigue that eventually lead to component failure. Flexible, high-aspect-ratio under flow, such as the wire-wrapped cylindrical fuel elements in a liquid metal-cooled fast reactor core, are particularly susceptible vibration due their low natural frequencies. The flow-induced vibrations experienced by tend be random amplitude frequency; however, at critical flow velocities these experience self-excited, fluid-elastic instabilities immediate Such failures components, those act fission product barriers, prolonged shutdowns plants even permanent closure. Thus, better understanding response cylinders axial is needed. This study details development theoretical model incorporates effects helical wire wrap along cylinder understand its impact on dynamic flow. compared against experimental data varying geometries solitary confined results this provide an improved knowledge how affect